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A method for producing pure copper metal involves the reaction of copper(I) sulfide with oxygen gas to give copper metal and sulfur dioxide. Suppose the yield of this reaction is 87%. What mass of a copper ore consisting of 46% copper(I) sulfide must be mined in order to produce 1.0 x 10^3 kg (1.0 metric ton) of copper metal?
A voltaic cell consists of Mn/Mn2+ and Cd/Cd2+ half-cells containing equal volumes of solutions with the following initial concentrations: [Mn2+] = 0.090 M; [Cd2+] = 0.073 M.
how much 0.500 M Au(NO3)3 solution would you need to prepare to accomplish this? 3) If the price of the base metal is negligible, and the price of gold is $ 1791.05/oz. ( as of the date of this publication), what is the value of the medallion?
A helium-filled balloon has a volume of 2.75 L at 17 C. The volume of the balloon decreases to 2.36 L after it is placed outside on a cold day. What is the outside temperature in K?
A mixture at equilibrium at 827 C contains .552 mol CO2, .552 mol H2, .448 mol CO, and .448 mol H20. The balanced equation is shown below: CO2(g) + H2(g) CO(g) + H2O(g) What is the value of Keq?
Calculate the equilibrium constant of the reaction I2(g)52 I(g) at 1000 K from the following data for I2: # = 214.36 cm
An aqueous solution containing 21.6 mg of vasopressin in 100.0 mL of solution has an osmotic pressure at 25.0 oC of 3.70 mmHg. What is the molecular weight of the hormone?
The acid-dissociation constants of phosphoric acid (H3PO4) are Ka1 = 7.5 × 10-3, Ka2 = 6.2 × 10-8, 25) and Ka3 = 4.2 × 10-13 at 25.0 °C.
the thermite reaction is performed using 8.6g Fe2O3 and 1.8g powdered Al metal. which reactant is in excess and by how much?
If 8.00 mol of NH3 reacted with 14.0 mol of O2, how many moles of H20 will be produced?
calculate the mass of water that must be added to 0.45 mol of glucose to make a solution of 15.0 percent by mass. the molar mass of glucose is 180 g/mol
Calculate the mass of nitrogen dissolved at room temperature in an 92.0L home aquarium. Assume a total pressure of 1.0 atm and a mole fraction for nitrogen of 0.78.
When 24 mL of a 170 mL stock solution containing 1.5 M BaF2 is diluted to 76 mL, what is the concentration of Ba2+ in the new solution
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